Comment by Bernd Bausch for You can not use virtual box for compute But you can use virtual box for your controller In the lab you should use strong hardware for controller and small hardware for compute node but in operation it is diffrent

"master node" sounds like you want an installation with an orchestration tool like Ansible or Puppet. Packstack uses Puppet, and I think you can guess what OpenStack-Ansible and Kolla-Ansible use. There is also a project that creates Chef recipes for OpenStack deployment.